StelsXML is a JDBC type 4 driver that allows you
to perform SQL queries and other JDBC operations
on XML files. It allows you to easily access data
contained in XML documents using the standard SQL
syntax and XPath expressions. The driver is
completely platform-independent. It supports most
keywords of ANSI SQL'92, XPath expressions for
defining tables and columns, inner and outer table
joins, aggregate, numeric, string, conversion, and
user-defined SQL functions.

BitNami Opina Stack is an easy-to-install
distribution of the Opina poll management
software. It includes pre-configured, ready-to-run
versions of Apache-Tomcat, MySQL, and JDK
(optional), so users can get an Opina installation
up and running in minutes after answering a few
questions. Linux, Windows, and OS X are supported.

BitNami JRubyStack provides a fast, easy way to
develop and deploy Ruby on Rails applications on a
Java runtime using JRuby. It includes JRuby,
Rails, Java, Tomcat, the GlassFish gem, MySQL, and
Subversion. It supports Windows, Linux, and Mac OS
X, so you can share the same Rails environment on
multiple platforms.

SYMPLiK XTRACT4J is a stand-alone, pure Java program that can create XML files from one or more dependent or independent SQL queries. A post-processing hook can be applied to this XML file, e.g. using Oracle BI Publisher RTF template to create professional PDF report with embedded barcodes. It was originally designed as a drop-in replacement for Oracle Report, with highly configurable and easy-to-use features.

lib4d_sql is a C library that provides the required functions (connect, prepare, execute, etc.) for writing an SQL client for 4D databases. It uses the public 4D SQL protocol, which is supported by 4D products since version 11. It is already used by the PDO_4D Open Source project, and it might be used to provide others drivers for JDBC, ADO, or ActiveRecord.

Migrations is a tool for managing changes to database schemas. It is an Enterprise tool based on ActiveRecord migrations from Rails. It features multiple schema interactions, runtime substitution of values, script generation, auditing, and much more.